Home / 20,780.04-31,310.32-17,163.29

Finding the Fourth Proportional to 20,780.04, 31,310.32 and 17,163.29

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Solution

The fourth proportional to 20,780.04, 31,310.32 and 17,163.29 is: 25,860.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,780.04 : 31,310.32 = 17,163.29 : x
  2. Step 2: Convert to fraction form
    20,780.04/31,310.32 = 17,163.29/x
  3. Step 3: Cross multiply
    20,780.04x = 31,310.32 × 17,163.29
  4. Step 4: Simplify right side
    20,780.04x = 537,388,102.15
  5. Step 5: Solve for x
    x = 537,388,102.15/20,780.04
  6. Step 6: Final answer
    x = 25,860.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.